I liked it and think it is very good and has potential. One thing I would like to see is more balancing because you can go from a 10-word sentence to a 60 in one rank up.
Yes, I just took some random sentence samples from the Typeracer site. So that could definitely be done in an update to balance the difficulty level
EDIT: I just updated the game and did some balancing. You should now encounter approximately the same size texts per difficulty category.
